Deaerating apparatus



Nov, 10 192.5

a. ammo DEAERATING APPARATUS Filed Jul -28, 192s en 651)}; B r amaemtoz i for removing air and other gases from boiler 3 Patented Nov. 10,1925.

i'rso s'rArrzs Arsr Fries.

BENJAMINBBOIDO, OF NEW YORK, N. Y., ASSIG'NOR TO THE SUPERHEA'EER COMPLNY 0F YORK, N. Y., A CORPORATION OF DELAWARE. I

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Application filedlnly 28, 1920. serial No. 399,621.

Apparatus, of which the following is a spec1-' fication.

The present invention relates to apparatus feed-water. v

The advisability for furnishingto boilers or to econoinizers water that has had removed from it enyeir or other gases is now well recognized. In the case of steel econonlizers such removal is particularly necessary.

The present invention has for'its purpose I the provision of simple and effective means for accomplishing the removal of such air and other gases. llhe rinci le 11 on which 0 P P P it primarily depends for its operation is the well known one that when the pressure on water is diminished gases in solution are liberated, the liberation being more complete the'more the pressure is reduced. In the accompanying drawing, illustrating the preferred form ofmy invention, Fig. 1

' shows in elevation the entire apparatus;

while Fig. 2 shows on an enlarged scalega motion of'e port of the apparatus. Fig. 3 illustrates a modification. v

. fhe water is drawn from the hot-well or other source ,1. It enters the pipe 2, passing through check-valve 3. 4 is the usual strainer. The pipe 2 conveys the water to \the tank 5 located at a considerable elevationabove hot-well 1, this elevation being as high .as is consistent with good operation of the system, The elevation can not be greater than the length of e water column corre-' sponding to the atmospheric pressure, and will in practice be somewhat less. Pipe 6 carries the water to pump 7, which forces it through pipe 8 into the boiler 13. Tank 5 is connected to at source of water underpressure such as the boiler by pipe 9, and, at its highest point, to the atmosphere by pi e 10. Pipes 9 and 10 are provided with vaves 11 and 12 respectively. Pipe 8 is rovided with the usual check-valve 15 opening toward the boiler. The valves 11 and 12 are arranged to work in unison, i. e., they are either both open or both closed; and the arrangement shown is a convenient one to effect this automatically. Thepartition 36 valve 20 carried by the arm 21. of the partition 36. The float then rises and, closes valves 11 0.111112. 4 j The operation'of the s tem will now be divides a smaller chamber 17 from the larger chamber 18. This partition terminates at its upper end a little below the top of the tank and its, bottom is a little above the bottom of the tank. An orifice 19 in the bottom of the partition is controlled by the float 22, the arm being pivoted at 23.

float 24; which carries a stem 25 extending In the space 17 is a comparatively large through a stuffing box in the wall of the tank and is operatively connected to the arms 26 and 27 of the valves 11 and12. With the-float 24 in its upper osition,the valves tion of gases in the'tank as will be described more fully below, too en valve 19, thewnter from chamber 17 will edischarged'through this orifice until float 24 dro s far'enough to open valves 11 and 12. ereupon, as more fully explained below, the water level will be raised-by water entering throu 11 pipe 9 end as soon as float 22 is raised an ciently' it will close valve 20 and the water level will rise in 18. No Water, however, will enter chamber 17, and valves ll'and 12 17 is filled bywater coming over the top of.

readil understood from t a following statement The water being puinped into the toner 1 and rising in pipe 2 to tank 5 is there exposed to a muchdinninished pressure, with the result that air and other gases it' carries are more or less completely liberated and accumulate in the upper part of tankfi, de-

pressing the water level in the tank. When this water level falls far enough 'to open valve 20, valves 11 and 12 will automatically will therefore remain open, until chamber open as above described. With these two valves open, water from the boiler or other source of water under ressure, enters the,

eck valve 3--pre=" tank through pipe 9.

vents the water from leavlng through "pipe 2, and the water level in tenk therefore uickly-rises, the accumu lnted gases bem orced'out throughqpelll. When the gases at once allow the Water level to drop correspondingly: It is for this reason obviously desirable to have the pipe connect to the tank frat the highest possible poinfi, and to expel substantially allot the accumulated gases.

The liberation of the gases from the Water is aided by raising the temperature of the water. To take advantage of this fact the water may be heated in the tank 5. In the drawing an arrangement for the latter method is shown. This-consists in a set of steam coils 16, through which live or "exhaust steam is circulated. It will be under.- stood that While the liberation of the gases is" aided by this heating, such heating is not essential. /Vhere it is used the degree to which the temperature the Water is raised all be dictated somewhat by condltions.

boiling point, wide, with the diminished pressure involved, will of course be comparstively low.

It should be noted that Whatever vaporization occurs within. the tank involves no heat loss, as any vapor inthe tank is at the low pressure prevailing during normal oper-. n, and is at once condensed When valve is opened and the pressure rises. lt'rnay at times be desired to use manually operated means for opening and closing valves ll and 19, and such means, are shown in The partition 36, float 2t, and float-controlled valve are entirely omitted, and valves 11 and 12 are directly opened from time to time by means of chain 13, "Whilethe valves are open, Water entering from the boiler through pipe 9 forces the accumulated out through pipe 10. Thevalves are closed when the gases have all beeniiriven. out and normal pumping is restoned, v

What 1 claim is: 1. in apparatus of the class described, the

combustion of a source of water, a closed tank am considerable elevation above the source, a pump, a pipe from the source to the tank,a pipe from the tank to the pump, a delivery pipe from the pump, a checkvalve in the first pipe, a valved pipe from a. source of Water under pressure to the tank, a valved pipe from an elevated. point of the imes it will be advisable to raise it to the weaves pipe from the pump, a check-valve in the. i

first pipe, at valved pipe from a. source of Water under pressure to the tank, a valved pipe from an elevated point of the tank to the atmosphere, and automatic means to operate the two valves in unison, opening them when the water level in the tank falls below a predetermined;- point and closing them when it rises above a predetermined higher point.

3. In apparatus of the class described, the

supply, a closed tank at a considerable elevation above the source, a pump, a pipe from the source to the tank said pipe being equipped with a check-valve preventing flow from. the tank to the source, a pipe from the tank to the pump, a pipe from the pump=to the boiler, a valvedpipe from the Water space of the boiler-t thetank, a valved pipe from substantially the highest point of the tank to'the atmosphere, and automatic means to open the valves in said lastmamedtwo pipes when the water level in the tankfalls below a predetermined point, arid to close 'them when it has risen to a predetermined higher point. i

4. In apparatus for separating-from Water of a source of water supply, a closed tank located above the surface of the-water supply at a distance approximately e uel to that to which: the airi pressure wil raise Water, a pump, 85 pipe the water supply to the tank, a pipe from thetenk to the pump, it delivery. p1pe from thepump, a check-valve in the first pi e321 velved pipe to the tank from a source 0 water under pres sure above atmospheric, and e valved pipe to the atmosphere troman elevated pointof the tank.

In apparatus for separating from water gases held in solution by it, the combination of a pump, a conduit to carry Water to the pump including aclosed tank, a check-valve in said conduit, said tank being so located combination of a, boiler a source of water gases held'in itin solution, the combination that the pressure in-it approximates zero,

whereby said gases are liberated ,from the Water, valved means to supply Water under pressure above atmosphere to the tanlgand a valved passage from anelevated point of the tank to the atmosphere;

" BENJAMIN Bsomo. 

